‘Lighthouses in space’: the Chinese jam-proof satellite network to fill GPS gaps

Chinese researchers say they have built an 11-satellite network for a jam-resistant, high-accuracy optical navigation system, designed to provide positioning where GPS is unavailable or disrupted, from self-driving cars and drones to deep-space missions. Optical navigation has also been used in the ongoing US-Israeli war with Iran, helping drones developed by companies such as Asio Technologies and General Atomics operate in environments where GPS signals are jammed.